| 摘要 |
<p>The fitting (1) has a cylindrical coupling body (2) for welding of pipelines that are made of thermoplastics. The body has two heating wire windings (3, 3') comprising turns arranged at any distance from one another and contacts (12) for supplying electric current. The windings run in sinusoidal-shape so that the coupling body is deformable, and a stop (23) controls a position of pipeline sections (14). The distances between the turns are constant or pitch of the windings is constant, where the windings run in a continuous and/or curved manner.</p> |
